Weighing-scales



2 Sheets-Sheet 1.

(Model) W. W. WRIGHT.

WEIGHING SCALES.

Patented Apr. 11, 1882.

l ll N. PETERS, Mo'Litho rlpMr. xvi-mm... n. c.

(ModeL) 2 Sheets-Sheet 2.

W W. WRIGHT.

\ WEIGHING SCALES.

No. 256,423. v, Patented Apr. 11,1882.

UNITED STATES PATENT OFFICE.

IVALTON W. WRIGHT, OF CAIRO, ILLINOIS.

WElGHlNG-SCALES.

SPECIFICATION forming part of Letters Patent No. 256,423, dated April 11, 1882.

' Applicationfiled October 21,1881. (IIIodeL) To all whom it mag concern Be it known that I, WALTON W. WRIGHT, of'Gairo, in the county of Alexander, and in the State of Illinois, have invented certain new and useful Improvements in Weighing-Scales; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making a, part of this specification, in whichv Figure 1. is a perspective view of a pair of scales combined with my alarm attachment. Fig. 2 is a section upon line a" w of Fig. 1, and Fig. 3 is a like view upon line 2 z ofsame figure.

Letters of like name and kind refer to like parts in each of the figures.

The design of my invention is to indicate by sound the overbalancing 0t scales, so that audible evidence oft'ull weight will be afforded purchasers; and to this end it consists, as an improvement in weighing-scales, in an electric alarm which is set in operation by means of a circuit-closer that is adapted to be operated by the arm of the scale-beam which receives the article to be weighed, and a wedge adapted to be moved longitudinally, so as to vary the position of said circuit'closer with relation to the said arm, substantially as and for the purpose hereinafter specified.

In applying my invention to use any form of mechanism capable of sounding an alarm will answer the purpose intended, so'tha-t it will be necessary to describe but one form or kind of alarm in order to fully illustrate the operation and advantages of said invention. For convenience I have combined with the scales an electric alarm, and will proceed to describe the same.

In the annexed drawings, A represents a box the top of which may be a counter, within which is contained an electric bell, B, of usual construction, together with a battery, (J, for operating the same.

Within the top of the box A is provided a push-bntton, D, which is capable of depression, and is held in an elevated position by means of a spring. Said button is connected with the battery 0 by means of a wire, E, and when depressed comes into contact with a wire, F, which extends to the bell B, and thereby closes the electric current andsets said bell mechanism in motion, all in the usual manner.

Resting upon the top of the box A, over the button D, is a pair of scales, G, which are so arranged that the depression of the end of the beam, upon which are placed articles to be weighed, will cause the push-button D to be pressed downward and the alarm to be sounded, such alarm indicatingthe overbalancingot' said scales and enabling those interested to know that there is full or over weight upon the scales of the article being weighed.

In order that the vertical position of the push-button D may be varied to adapt it to the scales, and to render certain the action of the latter, I tit the casing of said button loosely within an opening in the box-cover and cause its lower end to rest upon a wedge, H, which wedge is arranged to move horizontally and longitudinally, so as to cause any part of the same to be beneath said casing, the forward movement of said wedge operating to raise said casing and a rearward movement to depress the same. Athreaded rod, I, haviugoue end swiveled within the rear end of said wedge, its threaded body passing through a stationary nut, K, and its opposite end in position to receive a key, by means of which it may be ro-' tated, enables said wedge to be moved longitudinally in either direction, as may be necessary for the adjustment of the push-button.

The apparatus is now complete, and not only afli'ords purchasers protection against light weight, but also assists the seller in weighing out articles by giving him warning whenever the necessary amount has been placed in the scales.

Having thus fully set forth the nature and merits of my invention, what I claim as new 1s As an improvement in weighing-scales, an electric alarm which is set in operation by means of a circuit-closer that is adapted to be operated by the arm of the scale-beam which receives the article to be weighed, and a wedge adapted to be moved longitudinally, so as to vary the position of said circuit-closer with relation to the said arm, substantially as and for the purpose specified.

In testimony that I claim the foregoing I have hereunto set my hand this 11th day of October, 1881.

WALTON WHITNEY WRIGHT.

Witnesses JOHN A. HAYNES, P. W. BARCLAY. 

